Lamp-burner.



L. LORENZ. LAMP BURNER;

APPLICATION FILED DBO, 6, 1904 ANDREW, a (mum cav PMDYO-LIYKOGRIPNERS. wnsmuawm u c.

PATENTED MAY-1, 1906.

UNITED STATES PATENT OFFICE.

LUDWIG LORENZ, OF BERLIN, GERMANY, ASSIGNOR OF ONE-HALF TO MAX HERRMANN, OF BERLIN, GERMANY.

LAMP-BURNER.

Specification of Letters Patent.

Patented May 1, 1906.

Application filed December 5, 1904:. $eria1 No. 235,503.

gineer, a subject of the German Emperor,

and a resident of Berlin, Germany, Altonaerstrasse 12, have invented a certain new and useful Improved Lamp-Burner, of which the following is a specification.

This. invention has reference to an improved burner for petroleum, spirit, or other inflammable-liquid-consuming lamps; and it consists of a particular construction of that part of the burner which incloses the top end of the wick, by means of which construction a considerable quantity of the inflammable liquid is vaporized, so as to give a high illuminating effect without having to turn up the wick above the end of the wick-tube, so that the charring of the wick and also a smoking flame are avoided.

In the annexed drawings, given by way of example, Figure 1 shows a vertical section of the upper part of a lamp-burner embodying the invention. Fig. 2 shows a vertical axial section of the end portion of a wick-tube, slightly modified. Fig. 3 shows a similar sepotional view of still another form of wicktu e.

In carrying my invention into practice I employ a wick-tube 6, such as is usually employed for petroleum or spirit consuming lamps having round burners, which tube is screwed or otherwise suitably attached to the reservoir. In order to cause the formation of as large as possible a volume of inflammable vapor at the top and without having to turn up the wick to project beyond the end of said tube, I form the upper end of said tube 1), both internally and externally, with a series of apertures c (1, so that inflammable vapor may be formed and .exude through these apertures as well as from the upper and open end of the wick a. Both on the outer and the inner side of the wick-tube below the series of apertures referred to I provide suitably-dished rings f and g, which are of such a shape that annular spaces are formed between them and the tube into which the vapor exudes from the apertures, the arrange ment being such that the draft of air set up when the cylinder or lamp-glass is fixed in position will cause the vapors from the inner and from the outer apertures and those from the upper open end 0 the wick-tube to be intermingled or combined, so that when lighted they form a cone-shaped flame which possesses high illuminating power and is free from smoke, and inasmuch as by my improved construction of burner the wick is not required to be turned up to extend beyond the top end of the wick-tube said wick will not become charred, and, further, the evolving of any unpleasant smell, which is usual with nearly all petroleum-consuming lamps hitherto used, is avoided.

For the purpose of expanding the flame I employ, preferably, three disks h i is, Fig. 1, which I fix in any suitable manner on a small tube Z, provided for the purpose centrally.

within the wick-tube b. Said tube Zis formed with apertures m below the lowermost disk, so that air may enter thereinto, and between the other disks said tube is also formed with apertures m, through which the air admitted from below flows outwardly against the encircling flame. Besides providing the flame with oxygen the air thus passing along the under side of the top two disks serves to keep those comparatively cool, and thereby prevents the conduction of excessive heat to the burner.

If the burner is intended to be used in conjunction with an incandescent mantle, the outer one, f, of thetwo rings referred to, which are fixed on the wick-tube, is either made so as to slope outwardly, Fig. 1, or its outer periphery is formed with an annular projection n, Fig. 2, and the inner one, 9, of these rings is either made to project beyond the upper edge of the wick-tube, Fig. 1, or it is formed with an internally projecting annular ring 0, either of these constructions having the effeet to direct the current of air to the best advantage to the flame, so as to cause the greatest amount of heat to be evolved. Further, if desired, said two rings may be made to extend above the upper edge of the wicktube, said rings being formed so that they converge toward each other, and. thus form a slit between them and over the wick in the tube, through which slit pure inflammable petroleum or spirit vapor will pass, which is capable of burning without the flame being communicated to the wick. (See Fig. 3.)

-Having now fully described my said invention, what I claim, and desire to secure by Letters Patent, is-

1. In a burner for inflammable-liquid-consuming lamps the combination with an annular wick-tube provided near its upper end with a ertures in both inner and outer walls thereo of an inner and outer ring secured to the wick-tube beneath the said apertures and extending upwardly and forming an inner and outer channel with the wick-tube and of a flame-expander, substantially as and for the purpose described.

2. In a burner for inflammableliquid-consuming lamps the combination with an annular wick-tube provided near its upper end with apertures in both inner and outer wallsthereof, of an inner ring secured to the said wick-tube beneath the said apertures and ex tending at a little distance from the tube, of an outer ring fixed to the wick-tube beneath the outer apertures thereof and extending upwardly, thereby forming two circular channels about the upper end of the wick-tube, and of a flame-expander, substantially as and for the purpose described.

3. In a burner for inflammable-liquid-consuming lamps the combination with an annular wick-tube provided near its upper end with apertures in both inner and outer walls thereof, of an inner and an outer ring secured to the said wick-tube beneath its apertures and bent first upwardly and then inwardly in such a manner that they converge toward each other and form a slit between them and over the wick in the tube, and of a flame-expander, substantially as and for the purpose described. 7 4. In a burner for inflammable-liquidconsuming lamps the combination with an annular wick-tube provided near its upper end with apertures in both inner and outer walls thereof, of an inner and outer ring secured to the Wick-tube beneath the said apertures and extending upwardly, and of a flame-expander comprising a plurality of disks mounted upon a central tube above the wick, the said tube being provided with a plurality of holes beneath each disk, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

LUDWIG LORENZ.

Witnesses HENRY HAsPER, WOLDEMAR HAUPT. 

